I haven’t always been a pleasant person. In fact, I used to struggle with how I treated others. It was the strangest thing. There were some people I hated instantly. And I wasn’t content to ignore them. If they spoke to me, I went out of my way to be rude to them. It wasn’t something I was proud of doing, but I didn’t know how to stop. Finally, when I was nineteen, I made a concentrated effort to figure out why I felt so strongly and acted so badly. If someone said something that upset me, I...